Allow NULL geometry fields.

into mysql.r18.ru:/usr/home/ram/work/mysql-4.1

  SET NAMES is now working

  New thread variable client_character_set

  Less default_charset_info

  New method to simplify access to thd charset

  Less default_charset_info

  Less default_charset_info

  Less default_charset_info

  Some default_charset_info were removed
sql_select.cc:
  Some default_charset_info were removed.

  Some reoganization
  Fixed that binary arguments do not affect result charset
  anymore
  For example, the second argument doesn't affect charset of result in LEFT(string,10)
sql_string.h:
  Strings are binary by default now

  Fixed that MIN() didn't return proper charset for CREATE from SELECT

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

into serg.mysql.com:/usr/home/serg/Abk/mysql-4.0

into serg.mysql.com:/usr/home/serg/Abk/mysql-4.0

into serg.mysql.com:/usr/home/serg/Abk/mysql-4.0

Code clean-up.

 - moved helper functions from Bootstrap script to logger.pm 

 - tagged ChangeSet 1.1594 as "mysql-4.0.11"

Ensured that all errors messages ends with: ",

1. Fix for the crash in debug mode when the .frm is corrupted and SHOW TABLE STATUS is executed.This also fixes to return the error message to comment field in SHOW TABLE STATUS when the .frm is corrupted
2. Test for corrupted .frm and the SHOW TABLE STATUS

into serg.mysql.com:/usr/home/serg/Abk/mysql-4.0

into mysql.com:/home/wax/mysql-4n

into rhols221.adsl.netsonic.fi:/home/my/bk/mysql-4.0